Australian singer-songwriter Vance Joy spent the past year touring with US megastar Taylor Swift and has found a unique way to celebrate its end.

The Riptide singer was part of the north American and Australian leg of Swift’s 1989 tour, and gifted the singer with a $20,000 Ken Done artwork to say thanks.

The bright image on a black background shows fireworks over the Sydney Harbour Bridge, with the Opera House and city skyline also within the frame.

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Music notes, Swift’s trademark white sunglasses – similar to those on the 1989 album cover – and the text ‘wish you were here’ completed the painting.

“We’ve kept this one quiet, but the lovely Vance Joy decided the perfect way to thank Taylor Swift for taking him around the world on the #1989 tour was with an original Ken Done,” the Ken Done Gallery said in a post to social media.

Joy commissioned the 75-year-old artist to create the one-of-a-kind artwork for Swift, with a $20,000 donation to UNICEF the agreed payment, according to News Corp.

“Ken is a much-loved Ambassador and supporter of UNICEF Australia,” UNICEF Australia Fundraising Director Michael Newsome said.

“Not only is one of his iconic works in the hands of one of the world’s top recording and performing artists, it’s gone on to give back to the world’s most vulnerable children, thanks to the generosity of Ken and another Aussie favourite, Vance Joy.”

Done is best known for his simple, bright images of Australian landmarks printed on clothing.

Swift’s world tour wrapped up in Melbourne on December 12, and the artwork was reportedly given to her before she went on stage.